My Mom was watching me sew on her 301 and as I took out the pins she said, "That machine will sew right over those pins." In Home Ec (many years ago) we all wanted to be assigned one of the new machines that would sew over pins. I remember one of my friends who was assigned an old machine saying, "I can't believe it! This machine just sewed over a pin!" I think it was a selling point at that time for the newer machines. I quit sewing over pins the day I hit one with my Kenmore and broke a needle which almost flew into my eye. Besides the safety factor, the computer machines are much more tempermental and delicate than the old metal geared ones.